Sextant
At 100ft, the horizon is approx 12 miles away.
Establish a horizon line and a vanishing point
Not sure about the horizon number line but the horizontal line is sometimes called the x-axis.
vertical
Horrizontal.
Altitude of a celestial body is the angular distance between the horizon and the body when viewed from a specific location on Earth. It is measured in degrees and ranges from 0° at the horizon to 90° at the zenith, directly overhead.
yes
The horizon is the great circle on the sky midway between the celestial poles.
The angular distance from the horizon to the height of a celestial object is known as its altitude. It is measured in degrees, ranging from 0° at the horizon to 90° at the zenith (directly overhead). This measurement helps observers determine how high an object appears in the sky, which is essential for navigation and astronomy.
At 45 degrees north latitude, the north celestial pole appears 45 degrees above the northern horizon. At 45 degrees south latitude, the south celestial pole appears 45 degrees above the southern horizon.
Altitude is the angle measured above the horizon.
The celestial equator is an imaginary line in the sky that represents the projection of Earth's equator onto the celestial sphere. It divides the sky into northern and southern hemispheres. The horizon, on the other hand, is the line where the sky meets the Earth's surface when viewed from a specific location, forming the boundary between the visible sky and the ground.
Sextant, instrument for determining the angle between the horizon and a celestial body such as the Sun, the Moon, or a star, used in celestial navigation to determine latitude and longitude. ... The angular distance of the star above the horizon is then read from the graduated arc of the sextant
One eighth of a circle.
If your latitude is 39 degrees north, then the north celestial poleis 39 degrees above your northern horizon.If your latitude is 39 degrees south, then the north celestial poleis 39 degrees below your northern horizon.
No, the celestial equator does not always pass directly overhead. The position of the celestial equator in the sky is determined by the observer's latitude on Earth. If the observer is located at the equator, the celestial equator will pass directly overhead. However, for observers at different latitudes, the celestial equator will appear at an angle to the horizon.
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